vogkel



G. A. VOGEL.

STOCK FOR SPIRLT. LEVELS.

APPL|cAT1oN FILED Aucsmlflsn.

Patented May 13,1919

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uswej. Wage@ 'NVENT "Wn-N ESSES r4 GUSTAVE A. VOGEL, 0F NEW BRITAIN,CONNECTICUT.

STOCK Foa SPIRIT-LEVELS.

Y Vthe stock or body, whichiis of Lbeam cross section, is constructedpartly, of steel and partly of aluminum to insure lightness and strengthand to eliminate the possibilityI of warping or bending.

The invention will be best understood from a consideration of thefollowing detailed description, takenlin connection with theaccompanying drawing forming part of this specification, with a furtherunderstanding that while -thedrawing shows several practical forms oftheinvention, the latter not confined to any strict conformity with theshowing of the drawing, but may be changed and modified so long as suchchanges and modifications come within the scopeof the appended claims.

In the accompanying drawings Figure 1 is a side' elevation of a combinedlevel and plumb constructed in accordance vsa ' Fig.` 1 o with theinvention. s.

`\Fig. 2 lis an edge elevation thereof.

Fig. 3 is a sectional view on the line 3-3 of Fig. 1. Fig. 4 is asectional View on the li'ne .4f-4 of Fig. 1.

Fig. 5 is a perspective view.A of the steel .plate constituting thestock. 1

Fig. 6 is a view similar to Fig. 5 showing a slight modification.

Similar reference characters indicate correspondin parts throughout` theseveral views in t e drawing.

Referring to the'drawing, A- designates the web portion, and-B andfC4respectively the topand bottom vbarsor Hanges, the web and .flanges'constitutinga stock o'f an I-beam cross section. The web ortion Aispref.- erablymadelfr'om astraight steel, plate 10 having therein one ormore transverse openings for receiving the bubble glass andbub'- bleglass carrier. i I

In the articular form of stockshown in fp the drawing, three openingsare Specification ofvLetters Patent.

' plate Patented May 13,1919.

Application filed August 11, 1917. Serial 1Io.l1.85,780

provided, the center one being lemployed for a level glass, while theend ones are employed for oppositely arranged plumb glasses. `'Thearrangement of the parts is such that no part of the level glass orlevel glass carrier, stands beyond the plane of the bars or flanges Band C, with the result that all parts are protected from injury when theinstrument is laid upon its side.

The level glass carrier and each plumb y glass carrier comprisesatubularcase 11, cut away at one side to provide-a sight opening 12, atthe middle upper part thereof. 'The case 11 is formed with a flange 13.which is co-eXtensive therewith longitudinally of the same, althoughtheflange may be in the form of ears. Through bthis flange 13, arepassed fasteners 14, preferablyv screws, detachably threaded in theplate 10, VWhile within the case 11 is the bubble glass 15, of the usualconstruction. The plate 10 whichis made from steel is prefer'albly outand bent at its l longer edges teprovide the alternate oppositelyextending lateral flanges 16, in this instance the major number of whichare provided with holes or apertures 17, it being understood, of course,that if found desirable all of the flanges may be perforated. The

flanges 16 are anchored or embedded in the bars or flanges C, which arepreferably made from aluminum, molded or cast about thev longer edges ofthe plate 10, with the anges 16 within said bars or rails.

In the molding or casting of thebars of flanges B and C, the metal willflow through the holes or apertures 17 and form a connec- -tion betweenthe plate and thebars or flanges to insure the positive binding of saidbars or flanges upon the plate.

The laterally extending flanges 16 of the plate 10, when anchoredirs-,the bars or flanges B and C, materially strengthen the instrument.so as to avoid the possibility of the warping or bending of the plate 10and thereby assuring maximumstiffness to the instrument. l v

' ln F'g. 6 ofthe drawing, there is shown 'a slight modification ofstock in. which the 18 made from steel, is devoid of flanges at itslonger edges, and near these straight 'edges 19 are formed .at intervalsin the plate 18 holes ,or apertures 20 for thesecure anlos chorage ofsaid edges 19 in the top andy b0ti edges `19 of the., plate 18throughout :the

length thereof', and in this manner the said top and` bottom bars orrails will not become separated from the plate.

I From the foregoing itis thought that the construction and manner .ofmaking the spirit level and plumb will be clearly under-A stood, andtherefore, a more' extended explanation has been omitted.

What I claim is: a

1. In an instrument of the character described, a stock of an I-beamcrosssection consisting of a steel plate having perforations at thelongitudinal edges thereof, and

aluminum bars constituting flangesfor the stock cast about the4perforated ledges of said plate, whereby said edges are embedded withinthe saidbars.

2. In an vinstrument of the character described, a stock of an I-beamcross section consisting of a steel plate having its longi-v tudinaledges flanged, and aluminum `b ars constituting the flanges for thestock cast about the flanl ed edges ofsaidplate, whereby said edge are.`embedded wit-hin said bars. l

3. In an instrument of the character described, a stock of an I-beaincross section consisting of a steel plate having its longitudinal edgesflanged and perforated, and

aluminum bars constituting theflanges for A the stock cast about theperforated and flanged edges of said plate, whereby said edges areembedded within said bars.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.-

. Y hi s GUsTAvE A. VOGEL.

l mark. Witnesses:

' Moluus D. SAXE, ABRAHAM R. PoUzzEs.

